For each of the following functions, determine all horizontal intercepts. Try to determine these algebraically first then verify your answers by graphing the functions on your calculator. а. h (ӕ) — 4(а — 8) + 2 Preview b. b(ӕ) — г(12 — 2г) (9 — 2г) - Preview

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter1: Expressions And Functions
Section1.8: Interpreting Graphs Of Functions
Problem 11PPS
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The actual distance (in miles) is 28 times as large as the corresponding distance on the map (in inches).
This table shows pairs of lengths on the map and the corresponding actual distances. The graph on the
right shows the same pairs represented in the table as points and the trace that shows all possible pairs of
corresponding distances on the map (in inches) and actual distances (in miles).
distance on the map
450
actual distance
400
1.25 inches
28(1.25) = 35 miles
(14, 392)
350
2.7 inches
28(2.7)
= 75.6 miles
300
6.5 inches
28(6.5)
= 182 miles
250
14 inches
28(14)
= 392 miles
200
(6.5, 182)
150
100
(2.7, 75.6)
50
(1.25, 35)
2
4
6
8
10
12
14
16
distance on the map (in inches)
We can scan the above graph and see that each value of the distance in inches on the map, n, (indicated on
the horizontal axes), corresponds to exactly one distance (in miles) on the road, d.
For each of the following functions, determine all horizontal intercepts. Try to determine these
algebraically first then verify your answers by graphing the functions on your calculator.
a. h(x) = 4(x – 8) + 2
Preview
b. b(x) = x(12 – 2æ)(9 – 2æ)
Preview
actual distance (in miles)
Transcribed Image Text:The actual distance (in miles) is 28 times as large as the corresponding distance on the map (in inches). This table shows pairs of lengths on the map and the corresponding actual distances. The graph on the right shows the same pairs represented in the table as points and the trace that shows all possible pairs of corresponding distances on the map (in inches) and actual distances (in miles). distance on the map 450 actual distance 400 1.25 inches 28(1.25) = 35 miles (14, 392) 350 2.7 inches 28(2.7) = 75.6 miles 300 6.5 inches 28(6.5) = 182 miles 250 14 inches 28(14) = 392 miles 200 (6.5, 182) 150 100 (2.7, 75.6) 50 (1.25, 35) 2 4 6 8 10 12 14 16 distance on the map (in inches) We can scan the above graph and see that each value of the distance in inches on the map, n, (indicated on the horizontal axes), corresponds to exactly one distance (in miles) on the road, d. For each of the following functions, determine all horizontal intercepts. Try to determine these algebraically first then verify your answers by graphing the functions on your calculator. a. h(x) = 4(x – 8) + 2 Preview b. b(x) = x(12 – 2æ)(9 – 2æ) Preview actual distance (in miles)
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